scholarly journals Micro Direct Methanol Fuel Cell Based on Reduced Graphene Oxide Composite Electrode

Micromachines ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 72
Author(s):  
Chaoran Liu ◽  
Sanshan Hu ◽  
Lu Yin ◽  
Wenli Yang ◽  
Juan Yu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Direct Methanol Fuel Cell ◽  
Composite Electrode ◽  
Catalyst Support ◽  
Catalyst Layer ◽  
Molar Ratio ◽  
Reduced Graphene ◽  
Direct Methanol ◽  
Methanol Fuel Cell ◽  
Carbon Loading

The effect of an anode composite electrode on the performance of a micro direct methanol fuel cell (μDMFC) is analyzed from sample preparation configurations and discussed in detail, with a specific focus on the catalyst layer and the micro-porous layer on the anode composite electrode. This study investigates the effects of Pt content, Pt-Ru molar ratio, Nafion content, catalyst support, and preparation method in the catalyst layer, along with the carbon loading and polytetrafluoroethylene (PTFE )content in the micro-porous layer, on the performance of the anode composite electrode. The results show that the anode composite electrode delivers the best performance with 30% Pt content, a 1:1.5 Pt-Ru molar ratio, 10% Nafion content on reduced graphene oxide as the catalyst support. The synthesis is optimized with the impregnation reduction method using NaBH4 as the reducing agent, with the addition of 1.5 mg/cm2 carbon loading and 5% PTFE.

Synthesis and Characterization of PtCo Alloy Nanoparticles Supported on a Reduced Graphene Oxide/g-C3N4 Composite for Efficient Methanol Electro-Oxidation

2021 ◽  
Vol 21 (3) ◽  
pp. 1721-1727
Author(s):  
Richa Baronia ◽  
Jyoti Goel ◽  
Sunil Kumar Singhal
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Support Material ◽  
Oxidation Of Methanol ◽  
Reduced Graphene ◽  
Direct Methanol ◽  
Electro Oxidation ◽  
Methanol Fuel Cell

In the development of direct methanol fuel cell (DMFC) the fabrication of an anode comprising of a Pt or Pt-based bi or tri-metallic alloys nanoparticles on a suitable support material having higher stability, higher surface area, electrical conductivity and strong interaction is very important. In the present work we have solved this problem by using a nanocomposite of reduced graphene oxide (rGO) and graphitic carbon nitride (g-C3N4) as the support material and deposited PtCo nanoparticles by in-situ chemical reduction. The electro-oxidation of methanol is carried out in an acidic medium. The electrochemical behaviour of as-synthesized PtCo/rGO-gC3N4 catalyst was found to be much superior to Pt/rGO-g-C3N4 catalysts towards electro-oxidation of methanol and is mainly due to the homogeneous dispersion of PtCo nanoparticles onto rGO-g-C3N4 nano composite, higher electrical conductivity and a strong interaction between metal nanoparticles and N group of the support material. By using the as-synthesized electro-catalyst the adsorption or poisoning of Pt due to CO is greatly reduced and more active Pt sites are created for the electro-oxidation of methanol. Thus, the as-synthesized electro-catalyst can be used as an efficient anode material in a direct methanol fuel cell.

Anode catalyst layer with novel microstructure for a direct methanol fuel cell

2012 ◽  
Vol 37 (10) ◽  
pp. 8659-8663 ◽  
Author(s):  
Guicheng Liu ◽  
Meng Wang ◽  
Yituo Wang ◽  
Feng Ye ◽  
Tongtao Wang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Catalyst Layer ◽  
Anode Catalyst ◽  
Direct Methanol ◽  
Methanol Fuel Cell
Sign in / Sign up

Export Citation Format

Share Document